Colbert visited 'Late Show' for the first time since it was announced earlier this month that he will replace Letterman sometime next year.

NASA project scientist Ed Stone was given a surprise by Stephen Colbert on Monday when he was given the agency's highest award.

Toronto's "crack-smoking mayor" Rob Ford and his apparent appetite for more than booze and illegal drugs provided late night TV hosts with plenty of material once again after the mayor's use of explicit language on live television Thursday morning.